题目
为防止二衬背后脱空,在二衬强度达到设计强度 的( )时开始进行回填注浆,若注浆材料采用水泥类 浆液,则应选用强度不低于( )的普通硅酸盐水泥, 回填注浆的压力应不大于( )Mp。A. 70%,32.5 Mp,0.5 MpB. 75%,35Mp,0.5MpC. 75%,32.5Mp,0.5MpD. 70%,32.5 Mp,0.35 Mp
为防止二衬背后脱空,在二衬强度达到设计强度 的( )时开始进行回填注浆,若注浆材料采用水泥类 浆液,则应选用强度不低于( )的普通硅酸盐水泥, 回填注浆的压力应不大于( )Mp。
A. 70%,32.5 Mp,0.5 Mp
B. 75%,35Mp,0.5Mp
C. 75%,32.5Mp,0.5Mp
D. 70%,32.5 Mp,0.35 Mp
题目解答
答案
C. 75%,32.5Mp,0.5Mp